The robot revolution has long sounded like a far-off sci-fi notion, but it’s a reality at the e-commerce giant.

Amazon now fields more than one million robots in its warehouses and says parity with its human headcount is coming

Technology is catching up to the U.S. workforce very quickly and one company is leading the way with robotics — which isn't exactly good news on the jobs front. The Wall Street Journal did a deep dive into Amazon's quest to automate tasks that have been done by its employees for decades.